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corpus_test.rs
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corpus_test.rs
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use super::helpers::{
edits::{get_random_edit, invert_edit},
fixtures::{fixtures_dir, get_language, get_test_language},
random::Rand,
scope_sequence::ScopeSequence,
EXAMPLE_FILTER, LANGUAGE_FILTER, LOG_ENABLED, LOG_GRAPH_ENABLED, SEED, TRIAL_FILTER,
};
use crate::{
generate,
parse::perform_edit,
test::{parse_tests, print_diff, print_diff_key, strip_sexp_fields, TestEntry},
util,
};
use std::{fs, usize};
use tree_sitter::{allocations, LogType, Node, Parser, Tree};
const EDIT_COUNT: usize = 3;
const TRIAL_COUNT: usize = 10;
#[test]
fn test_bash_corpus() {
test_language_corpus("bash");
}
#[test]
fn test_c_corpus() {
test_language_corpus("c");
}
#[test]
fn test_cpp_corpus() {
test_language_corpus("cpp");
}
#[test]
fn test_embedded_template_corpus() {
test_language_corpus("embedded-template");
}
#[test]
fn test_go_corpus() {
test_language_corpus("go");
}
#[test]
fn test_html_corpus() {
test_language_corpus("html");
}
#[test]
fn test_javascript_corpus() {
test_language_corpus("javascript");
}
#[test]
fn test_json_corpus() {
test_language_corpus("json");
}
#[test]
fn test_php_corpus() {
test_language_corpus("php");
}
#[test]
fn test_python_corpus() {
test_language_corpus("python");
}
#[test]
fn test_ruby_corpus() {
test_language_corpus("ruby");
}
#[test]
fn test_rust_corpus() {
test_language_corpus("rust");
}
fn test_language_corpus(language_name: &str) {
if let Some(language_filter) = LANGUAGE_FILTER.as_ref() {
if language_filter != language_name {
return;
}
}
let grammars_dir = fixtures_dir().join("grammars");
let error_corpus_dir = fixtures_dir().join("error_corpus");
let mut failure_count = 0;
let language = get_language(language_name);
let mut corpus_dir = grammars_dir.join(language_name).join("corpus");
if !corpus_dir.is_dir() {
corpus_dir = grammars_dir.join(language_name).join("test").join("corpus");
}
let error_corpus_file = error_corpus_dir.join(&format!("{}_errors.txt", language_name));
let main_tests = parse_tests(&corpus_dir).unwrap();
let error_tests = parse_tests(&error_corpus_file).unwrap_or(TestEntry::default());
let mut tests = flatten_tests(main_tests);
tests.extend(flatten_tests(error_tests));
for (example_name, input, expected_output, has_fields) in tests {
println!(" {} example - {}", language_name, example_name);
let trial = 0;
if TRIAL_FILTER.map_or(true, |t| t == trial) {
let passed = allocations::record(|| {
let mut log_session = None;
let mut parser = get_parser(&mut log_session, "log.html");
parser.set_language(language).unwrap();
let tree = parser.parse(&input, None).unwrap();
let mut actual_output = tree.root_node().to_sexp();
if !has_fields {
actual_output = strip_sexp_fields(actual_output);
}
if actual_output == expected_output {
true
} else {
println!(
"Incorrect initial parse for {} - {}",
language_name, example_name,
);
print_diff_key();
print_diff(&actual_output, &expected_output);
println!("");
false
}
});
if !passed {
failure_count += 1;
continue;
}
}
let mut parser = Parser::new();
parser.set_language(language).unwrap();
let tree = parser.parse(&input, None).unwrap();
drop(parser);
for trial in 1..=TRIAL_COUNT {
if TRIAL_FILTER.map_or(true, |filter| filter == trial) {
let mut rand = Rand::new(*SEED + trial);
let passed = allocations::record(|| {
let mut log_session = None;
let mut parser = get_parser(&mut log_session, "log.html");
parser.set_language(language).unwrap();
let mut tree = tree.clone();
let mut input = input.clone();
if *LOG_GRAPH_ENABLED {
eprintln!("{}\n", String::from_utf8_lossy(&input));
}
// Perform a random series of edits and reparse.
let mut undo_stack = Vec::new();
for _ in 0..EDIT_COUNT {
let edit = get_random_edit(&mut rand, &input);
undo_stack.push(invert_edit(&input, &edit));
perform_edit(&mut tree, &mut input, &edit);
}
if *LOG_GRAPH_ENABLED {
eprintln!("{}\n", String::from_utf8_lossy(&input));
}
let mut tree2 = parser.parse(&input, Some(&tree)).unwrap();
// Check that the new tree is consistent.
check_consistent_sizes(&tree2, &input);
if let Err(message) = check_changed_ranges(&tree, &tree2, &input) {
println!(
"\nUnexpected scope change in trial {}\n{}\n\n",
trial, message
);
return false;
}
// Undo all of the edits and re-parse again.
while let Some(edit) = undo_stack.pop() {
perform_edit(&mut tree2, &mut input, &edit);
}
if *LOG_GRAPH_ENABLED {
eprintln!("{}\n", String::from_utf8_lossy(&input));
}
let tree3 = parser.parse(&input, Some(&tree2)).unwrap();
// Verify that the final tree matches the expectation from the corpus.
let mut actual_output = tree3.root_node().to_sexp();
if !has_fields {
actual_output = strip_sexp_fields(actual_output);
}
if actual_output != expected_output {
println!(
"Incorrect parse for {} - {} - trial {}",
language_name, example_name, trial
);
print_diff_key();
print_diff(&actual_output, &expected_output);
println!("");
return false;
}
// Check that the edited tree is consistent.
check_consistent_sizes(&tree3, &input);
if let Err(message) = check_changed_ranges(&tree2, &tree3, &input) {
eprintln!(
"Unexpected scope change in trial {}\n{}\n\n",
trial, message
);
return false;
}
true
});
if !passed {
failure_count += 1;
break;
}
}
}
}
if failure_count > 0 {
panic!("{} {} corpus tests failed", failure_count, language_name);
}
}
#[test]
fn test_feature_corpus_files() {
let test_grammars_dir = fixtures_dir().join("test_grammars");
let mut failure_count = 0;
for entry in fs::read_dir(&test_grammars_dir).unwrap() {
let entry = entry.unwrap();
if !entry.metadata().unwrap().is_dir() {
continue;
}
let language_name = entry.file_name();
let language_name = language_name.to_str().unwrap();
if let Some(filter) = LANGUAGE_FILTER.as_ref() {
if language_name != filter.as_str() {
continue;
}
}
let test_path = entry.path();
let mut grammar_path = test_path.join("grammar.js");
if !grammar_path.exists() {
grammar_path = test_path.join("grammar.json");
}
let error_message_path = test_path.join("expected_error.txt");
let grammar_json = generate::load_grammar_file(&grammar_path).unwrap();
let generate_result = generate::generate_parser_for_grammar(&grammar_json);
if error_message_path.exists() {
if EXAMPLE_FILTER.is_some() {
continue;
}
eprintln!("test language: {:?}", language_name);
let expected_message = fs::read_to_string(&error_message_path)
.unwrap()
.replace("\r\n", "\n");
if let Err(e) = generate_result {
let actual_message = e.to_string().replace("\r\n", "\n");
if expected_message != actual_message {
eprintln!(
"Unexpected error message.\n\nExpected:\n\n{}\nActual:\n\n{}\n",
expected_message, actual_message
);
failure_count += 1;
}
} else {
eprintln!(
"Expected error message but got none for test grammar '{}'",
language_name
);
failure_count += 1;
}
} else {
if let Err(e) = &generate_result {
eprintln!(
"Unexpected error for test grammar '{}':\n{}",
language_name, e
);
failure_count += 1;
continue;
}
let corpus_path = test_path.join("corpus.txt");
let c_code = generate_result.unwrap().1;
let language = get_test_language(language_name, &c_code, Some(&test_path));
let test = parse_tests(&corpus_path).unwrap();
let tests = flatten_tests(test);
if !tests.is_empty() {
eprintln!("test language: {:?}", language_name);
}
for (name, input, expected_output, has_fields) in tests {
eprintln!(" example: {:?}", name);
let passed = allocations::record(|| {
let mut log_session = None;
let mut parser = get_parser(&mut log_session, "log.html");
parser.set_language(language).unwrap();
let tree = parser.parse(&input, None).unwrap();
let mut actual_output = tree.root_node().to_sexp();
if !has_fields {
actual_output = strip_sexp_fields(actual_output);
}
if actual_output == expected_output {
true
} else {
print_diff_key();
print_diff(&actual_output, &expected_output);
println!("");
false
}
});
if !passed {
failure_count += 1;
continue;
}
}
}
}
if failure_count > 0 {
panic!("{} corpus tests failed", failure_count);
}
}
fn check_consistent_sizes(tree: &Tree, input: &Vec<u8>) {
fn check(node: Node, line_offsets: &Vec<usize>) {
let start_byte = node.start_byte();
let end_byte = node.end_byte();
let start_point = node.start_position();
let end_point = node.end_position();
assert!(start_byte <= end_byte);
assert!(start_point <= end_point);
assert_eq!(
start_byte,
line_offsets[start_point.row] + start_point.column
);
assert_eq!(end_byte, line_offsets[end_point.row] + end_point.column);
let mut last_child_end_byte = start_byte;
let mut last_child_end_point = start_point;
let mut some_child_has_changes = false;
let mut actual_named_child_count = 0;
for i in 0..node.child_count() {
let child = node.child(i).unwrap();
assert!(child.start_byte() >= last_child_end_byte);
assert!(child.start_position() >= last_child_end_point);
check(child, line_offsets);
if child.has_changes() {
some_child_has_changes = true;
}
if child.is_named() {
actual_named_child_count += 1;
}
last_child_end_byte = child.end_byte();
last_child_end_point = child.end_position();
}
assert_eq!(actual_named_child_count, node.named_child_count());
if node.child_count() > 0 {
assert!(end_byte >= last_child_end_byte);
assert!(end_point >= last_child_end_point);
}
if some_child_has_changes {
assert!(node.has_changes());
}
}
let mut line_offsets = vec![0];
for (i, c) in input.iter().enumerate() {
if *c == '\n' as u8 {
line_offsets.push(i + 1);
}
}
check(tree.root_node(), &line_offsets);
}
fn check_changed_ranges(old_tree: &Tree, new_tree: &Tree, input: &Vec<u8>) -> Result<(), String> {
let changed_ranges = old_tree.changed_ranges(new_tree).collect();
let old_scope_sequence = ScopeSequence::new(old_tree);
let new_scope_sequence = ScopeSequence::new(new_tree);
old_scope_sequence.check_changes(&new_scope_sequence, &input, &changed_ranges)
}
fn get_parser(session: &mut Option<util::LogSession>, log_filename: &str) -> Parser {
let mut parser = Parser::new();
if *LOG_ENABLED {
parser.set_logger(Some(Box::new(|log_type, msg| {
if log_type == LogType::Lex {
eprintln!(" {}", msg);
} else {
eprintln!("{}", msg);
}
})));
} else if *LOG_GRAPH_ENABLED {
*session = Some(util::log_graphs(&mut parser, log_filename).unwrap());
}
parser
}
fn flatten_tests(test: TestEntry) -> Vec<(String, Vec<u8>, String, bool)> {
fn helper(
test: TestEntry,
is_root: bool,
prefix: &str,
result: &mut Vec<(String, Vec<u8>, String, bool)>,
) {
match test {
TestEntry::Example {
mut name,
input,
output,
has_fields,
} => {
if !prefix.is_empty() {
name.insert_str(0, " - ");
name.insert_str(0, prefix);
}
if let Some(filter) = EXAMPLE_FILTER.as_ref() {
if !name.contains(filter.as_str()) {
return;
}
}
result.push((name, input, output, has_fields));
}
TestEntry::Group {
mut name, children, ..
} => {
if !is_root && !prefix.is_empty() {
name.insert_str(0, " - ");
name.insert_str(0, prefix);
}
for child in children {
helper(child, false, &name, result);
}
}
}
}
let mut result = Vec::new();
helper(test, true, "", &mut result);
result
}